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公开(公告)号：US11109869B2
公开(公告)日：2021-09-07
申请号：US16776638
申请日：2020-01-30
摘要： An embodiment of the invention is a shape memory polymer (SMP) foam designed to recover its original shape through exposure to a solvent. Thermo-responsive SMPs are polymers designed to maintain a programmed secondary shape until heated above their transition temperature, upon which the polymer recovers its original, or primary, shape. The thermo-responsive SMP foam is programmed to its secondary shape prior to use, typically compression of the foam to a small volume, and remains in this programmed shape until exposed to a selected solvent such as dimethyl sulfoxide or ethyl alcohol. Upon exposure to the solvent, the transition temperature of the SMP foam decreases below the temperature of the environment and the SMP foam actuates to its primary shape. The SMP foam is tailored to actuate upon exposure to specific solvents while minimizing or preventing actuation when exposed to water or other solvents. This selective solvent actuation can be used to increase working time of a SMP foam device, that is, the time allowed for use of a device without undesired actuation, while maintaining functional SMP actuation. Solvent actuated SMP foams can be used in various applications including, but not limited to, treatment of aneurysms and arterio-venous malformations, tissue engineering, and wound healing.
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公开(公告)号：US20200339730A1
公开(公告)日：2020-10-29
申请号：US16924819
申请日：2020-07-09
摘要： An embodiment includes a platform shape memory polymer system. Such an embodiment exhibits a blend of tunable, high performance mechanical attributes in combination with advanced processing capabilities and good biocompatibility. A post-polymerization crosslinking synthetic approach is employed that combines polyurethane and thiol-ene synthetic processes. Other embodiments are described herein.
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公开(公告)号：US20230098681A1
公开(公告)日：2023-03-30
申请号：US17956236
申请日：2022-09-29
发明人： Landon D. Nash , Duncan J. Maitland , Nicole Docherty , Thomas S. Wilson , Ward Small, IV , Jason Ortega , Pooja Singhal
IPC分类号： C08J9/36 , B29C59/14 , B32B27/06 , B32B5/18 , A61L31/14 , A61L31/06 , A61L24/00 , A61L24/04 , B05D1/00 , B05D3/14 , B05D7/02
摘要： An embodiment includes a system comprising: a monolithic shape memory polymer (SMP) foam having first and second states; wherein the SMP foam includes: (a) polyurethane, (b) an inner half portion having inner reticulated cells defined by inner struts, (c) an outer half portion, having outer reticulated cells defined by outer struts, surrounding the inner portion in a plane that provides a cross-section of the SMP foam, (d) hydroxyl groups chemically bound to outer surfaces of both the inner and outer struts. Other embodiments are discussed herein.
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公开(公告)号：US10548608B2
公开(公告)日：2020-02-04
申请号：US15579217
申请日：2016-06-07
摘要： An embodiment of the invention is a shape memory polymer (SMP) foam designed to recover its original shape through exposure to a solvent. Thermo-responsive SMPs are polymers designed to maintain a programmed secondary shape until heated above their transition temperature, upon which the polymer recovers its original, or primary, shape. The thermo-responsive SMP foam is programmed to its secondary shape prior to use, typically compression of the foam to a small volume, and remains in this programmed shape until exposed to a selected solvent such as dimethyl sulfoxide or ethyl alcohol. Upon exposure to the solvent, the transition temperature of the SMP foam decreases below the temperature of the environment and the SMP foam actuates to its primary shape. The SMP foam is tailored to actuate upon exposure to specific solvents while minimizing or preventing actuation when exposed to water or other solvents. This selective solvent actuation can be used to increase working time of a SMP foam device, that is, the time allowed for use of a device without undesired actuation, while maintaining functional SMP actuation. Solvent actuated SMP foams can be used in various applications including, but not limited to, treatment of aneurysms and arterio-venous malformations, tissue engineering, and wound healing.
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5.发明申请公开(公告)号：US20180177508A1
公开(公告)日：2018-06-28
申请号：US15579217
申请日：2016-06-07
CPC分类号： A61B17/12181 , A61B17/12031 , A61B17/12113 , A61B17/1219 , A61B2017/00871 , A61B2017/00938 , A61B2017/00964 , A61L31/06 , A61L31/14 , A61L31/146 , A61L2400/16 , A61L2430/36 , C08L75/04
摘要： An embodiment of the invention is a shape memory polymer (SMP) foam designed to recover its original shape through exposure to a solvent. Thermo-responsive SMPs are polymers designed to maintain a programmed secondary shape until heated above their transition temperature, upon which the polymer recovers its original, or primary, shape. The thermo-responsive SMP foam is programmed to its secondary shape prior to use, typically compression of the foam to a small volume, and remains in this programmed shape until exposed to a selected solvent such as dimethyl sulfoxide or ethyl alcohol. Upon exposure to the solvent, the transition temperature of the SMP foam decreases below the temperature of the environment and the SMP foam actuates to its primary shape. The SMP foam is tailored to actuate upon exposure to specific solvents while minimizing or preventing actuation when exposed to water or other solvents. This selective solvent actuation can be used to increase working time of a SMP foam device, that is, the time allowed for use of a device without undesired actuation, while maintaining functional SMP actuation. Solvent actuated SMP foams can be used in various applications including, but not limited to, treatment of aneurysms and arterio-venous malformations, tissue engineering, and wound healing.
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公开(公告)号：US10781294B2
公开(公告)日：2020-09-22
申请号：US15746471
申请日：2016-07-22
发明人： Landon D. Nash , Duncan J. Maitland , Nicole Docherty , Thomas S. Wilson , Ward Small, IV , Jason Ortega , Pooja Singhal
IPC分类号： C08J9/36 , A61L24/00 , A61L24/04 , B05D1/00 , B05D3/14 , B05D7/02 , B29C59/14 , B32B27/06 , B32B5/18 , A61L31/14 , A61L31/06 , B29K33/04 , B29C44/56 , B29K69/00 , B29K75/00 , B29K77/00
摘要： An embodiment includes a system comprising: a monolithic shape memory polymer (SMP) foam having first and second states; wherein the SMP foam includes: (a) polyurethane, (b) an inner half portion having inner reticulated cells defined by inner struts, (c) an outer half portion, having outer reticulated cells defined by outer struts, surrounding the inner portion in a plane that provides a cross-section of the SMP foam, (d) hydroxyl groups chemically bound to outer surfaces of both the inner and outer struts. Other embodiments are discussed herein.
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7.发明申请公开(公告)号：US20200253616A1
公开(公告)日：2020-08-13
申请号：US16776638
申请日：2020-01-30
摘要： An embodiment of the invention is a shape memory polymer (SMP) foam designed to recover its original shape through exposure to a solvent. Thermo-responsive SMPs are polymers designed to maintain a programmed secondary shape until heated above their transition temperature, upon which the polymer recovers its original, or primary, shape. The thermo-responsive SMP foam is programmed to its secondary shape prior to use, typically compression of the foam to a small volume, and remains in this programmed shape until exposed to a selected solvent such as dimethyl sulfoxide or ethyl alcohol. Upon exposure to the solvent, the transition temperature of the SMP foam decreases below the temperature of the environment and the SMP foam actuates to its primary shape. The SMP foam is tailored to actuate upon exposure to specific solvents while minimizing or preventing actuation when exposed to water or other solvents. This selective solvent actuation can be used to increase working time of a SMP foam device, that is, the time allowed for use of a device without undesired actuation, while maintaining functional SMP actuation. Solvent actuated SMP foams can be used in various applications including, but not limited to, treatment of aneurysms and arteriovenous malformations, tissue engineering, and wound healing.
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公开(公告)号：US20180009932A1
公开(公告)日：2018-01-11
申请号：US15548212
申请日：2016-02-02
IPC分类号： C08G18/32 , C08G18/67 , C08G18/75 , B29K105/04
CPC分类号： C08G18/3206 , B29K2105/04 , C08G18/3212 , C08G18/6715 , C08G18/675 , C08G18/73 , C08G18/758 , C08L75/04 , C08L75/16 , C08L81/02
摘要： An embodiment includes a platform shape memory polymer system. Such an embodiment exhibits a blend of tunable, high performance mechanical attributes in combination with advanced processing capabilities and good biocompatibility. A post-polymerization crosslinking synthetic approach is employed that combines polyurethane and thiol-ene synthetic processes. Other embodiments are described herein.
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公开(公告)号：US11459439B2
公开(公告)日：2022-10-04
申请号：US16984370
申请日：2020-08-04
发明人： Landon D. Nash , Duncan J. Maitland , Nicole Docherty , Thomas S. Wilson , Ward Small, IV , Jason Ortega , Pooja Singhal
IPC分类号： C08J9/36 , B29C59/14 , B32B27/06 , B32B5/18 , A61L31/14 , A61L31/06 , A61L24/00 , A61L24/04 , B05D1/00 , B05D3/14 , B05D7/02 , B29K33/04 , B29C44/56 , B29K69/00 , B29K75/00 , B29K77/00
摘要： An embodiment includes a system comprising: a monolithic shape memory polymer (SMP) foam having first and second states; wherein the SMP foam includes: (a) polyurethane, (b) an inner half portion having inner reticulated cells defined by inner struts, (c) an outer half portion, having outer reticulated cells defined by outer struts, surrounding the inner portion in a plane that provides a cross-section of the SMP foam, (d) hydroxyl groups chemically bound to outer surfaces of both the inner and outer struts. Other embodiments are discussed herein.
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公开(公告)号：US10730991B2
公开(公告)日：2020-08-04
申请号：US15548212
申请日：2016-02-02
IPC分类号： C08G18/32 , C08G18/67 , C08G18/75 , C08L81/02 , C08L75/16 , C08L75/04 , C08G18/73 , B29K105/04
摘要： An embodiment includes a platform shape memory polymer system. Such an embodiment exhibits a blend of tunable, high performance mechanical attributes in combination with advanced processing capabilities and good biocompatibility. A post-polymerization crosslinking synthetic approach is employed that combines polyurethane and thiol-ene synthetic processes. Other embodiments are described herein.
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